Vacuum pump or pulsator



April 212, 1930. L. DINESEN 1,755,318

VACUUM PUMP OR PULSATOR Filed July 6, 1926 3 Sheets-Sheet 1 April 22,1930. Dm sE 1,755,318

VACUUM PUMP OR PULSATOR Filed July 6, 1926 3 Sheets-Sheet 2 Zaurf/JDznesen Patented A r. 22, 193

:LAUBTTS Dinner-1N,Or'MmNEAPOLIs, MINNESOTA IvAcUU vLru /ir oru ensues IApplication ma July 6, 1926. f iSerial n6. 120,626.

My present invention in" the c nature of a' pumplng' device adaptedfOrvariOusdif- I I ferent uses,but particularly designed for useinhospitals' and sick rooms, or physicians i P mp;

offices. The pump has devices adapting it'to operate'at will as a'vaeuumpump, as ap'resor' as a pulsator or device for producing pressurepulsations. W hen adjusted to act as apressure'pulsator,the deviceisadapted for use as a breast pump;

when adjusted forfaction as a vacuum pump, a it is adapted for usegenerally for the'production of vaouumlor for drawing fluids such assurplus blood during operations and when adjusted for adapted for [or anair-blowing action is desired;

" fao l I ;A commercial form ofthe device illusi zotrated'in theaccompanying drawings, whereinlik'ezcharacters indicate likepart'sthrough- :out theseveral views.

Referring-to the'drawings: g Fig. '1 is a left side elevation showingthe improved device in connection with auxiliary devices, adaptingitforujse as a vacuum pump and {as .a pulsator';

2 is afrontel'evation of the imprc pved devlce with the receptacles"removed Figf3 is a section taken on, the'line 3 3 of Fi gins asectionftalienlon the of Fig; 2;

I a Fig. 5 is a section aka 0;; the line a ter i vice, withsome'partsbroken away and the Fig. 6 is a right side elevation of the de- Ihead plate of a gearing housing-therein shown removed; I

Fig, 7 is a fragmentary viewin left side, elevation, looking, at'theface of the pump :valve seat, the pumpjbeing, removed;

[Fig 8 is a right side elevation of the pump, showing the valve facesand ports thereof that cooperate with the port-equipped valve seatshownin Fig. 7 and Fig.9 is an axial sectioniofithepump piston,'the pistonbeing shown in elevatlon.

' 'The various parts of the complete'apparatus are preferably mounted ona common base 10 so that they constitute aportable self thataffordsa'gear housing.* This gear housaction as a'pressure pump, itisuse generally whereverjpressure" 1 The pump cylinder 18is mounted tooscil' p, late a laterally projecting plntle 19 that is passed [freely'journaled to-the'pedestal ll'preferably by a 'tal." The :cylinder'18has an upper port 23 contained device. :Rigidly secured on and eX-.

tending vertically upward from thejbas'e 1O 'is a pedestal-like casting.11, which, in its lower portion, has a cylindrical structure 12 Ving'is closed at one side andprovided with an 7 axial bearinghuh 1 3'andat its other side it is prov ded with a removable head platelt. Q I

The upperjportion of the pedestal casting "11 is formed with a pintlepassage15 and on its left-hand face with fiat valve faces 16 and '17;The valve face 16 is providedv with laterally spaced ports p and 4'),and the lower face 17 is formed with laterally spaced ports p and o.'The ports .1) and p are connected" y a conduit 2?, and the ports 4) ando are connected by a conduit '0 all as best shown in Figi 'T-J T andforthat purpose, is provided with 9 through thepintle passage l5 and isself-aligning ballbearing 20 that is countersunkinto the pedestal,'as'best shown inFig's. 5 4: and 6. The cylinder 18 is formed with valvefacesf2l and 22 that engage, respectively, withthe valve faces 16 and 17of the pedeslocated in its valve face 21 and arrangedto engagealternately with theport's pand' v of the valve seat l6; and saidcylinder is providedwith alowerport 24 in its valve face 22, arranged toengagealternately with the ports p, and '0" of the'valve face 17. Tohold the valve faces 21- and 22 tightly engaged with 'thei ooperatin g'valve faces 16 and'17,

Jacoiljed spring 25 is applied aroundthe pin- 7 tle 19 and arranged toreactagainst' a nut 26] on theyouterend of said pintlean'd against 9 thehub of the ballbearing,thereby holding said Joallbearing "in position.By adjustments ofthe nut 26, the tension of the spring, 25 may bevaried, at will.

The lower port 24:, it will he noted, extends'from the lower end-ofthecylinder to a point approximately the same distance from i the axisofthe pintle 19, as isthe upper cylinder port 23. 'In-its upper he ad,',the eylind'er 18 is shown as provided with a n pple 27 7 vacuumpulsations.

pump is used as a pulsator,

tion, will open up whenever a vacuum in eX- cess of the maximumdesiredvacuum is produced and this is-true Whether the vacuumbe producedby any one impulse or by a progressively increasing suction due torepeated that when the the lower por-' tion of the cylinder is'not used.Underupward movements of thepiston, the suction produced in the lowerend of the cylinder will Here it should be stated simply draw in airbyjc-ausing the valve, 42 to open, and underdownward movementsof the theplug 87;

piston, the air compressed in the lowerend :of the cylinder will. beslightly compressed 38 or a suitable substitute device thereto.

Pu p,

Moreoventhe plug'37 shouldalso be removed when the pump is used eitherfor pressure or for vacuum. v

If thepump is to be used as a pressurev an air tube should be applied tothe nipple 10 but if the pump is to be used as a vacuumpump,.such tubeshould be applied to the nipple '0 Of course, either a vacuum ing insaid cylinder and having a projecting rod connected to said crank, anipple on the upper end of said cylinder to which a flexible tube may beconnected, means for opening and closing said nipple at will, and meansfor connecting a pressure and '2. The structure defined in claim 1 infurflexible tube at'will to the vacuum ports of said pedestal.

ther combination with means for closing the vacuum port of said pedestalat will, and other means for partially closing or restrict-V ingthepressure ports of said pedestal.

In testimony whereof I affix my signature.

tube or a pressure tube may be connected to r Y one of the nipples ofthereceptacle 4:7 or to any other suitable device, character of the workto be done; I V p It has probably already been noted but is now herespecifically stated that, under downward movements of the. piston, theupper according to the 7 cylinder port'23 registers 'withthe upper Ivacuum port 11, and flower cylinder port24t. registers with the lowerpressure port p, while under upward movements of the pis-- ton, theupper cylinder port 23 registers with the upper pressure port 10, whilethe lower cylinder port 24: registers with the lower vacv uum port 1;,assuming that, as already'stated, 7

thecra-nk 30 rotates'in a counterclockwise direction in respect toFig. 1. This produces pressure in the pressure ports 20,10, and vacuumin the'vacuum ports v, v, under both 7 movements of the piston. Theoscillatory movements of the cylinder produce the above describedalternating valve action.

'WhatIclaimis: I I f 1. In a device of the kind described, thecombination of a base, a pedestal secured on said base and formed withconnected upper and lower pressure ports and connected upv VLAUBITS IDINESEN. v

per and lower vacuum ports, a pump cylinder 7 pivoted to said pedestaland having upper j and lower ports engageable alternately with thepressure and vacuum ports of said'pedlower portion of said pedestal, apiston work- V estal, a motor-driven crank mounted on the 65

